655 lines
28 KiB
Rust
655 lines
28 KiB
Rust
//! Builtin attributes resolved by nameres.
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//!
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//! The actual definitions were copied from rustc's `compiler/rustc_feature/src/builtin_attrs.rs`.
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//!
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//! It was last synchronized with upstream commit c1a2db3372a4d6896744919284f3287650a38ab7.
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//!
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//! The macros were adjusted to only expand to the attribute name, since that is all we need to do
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//! name resolution, and `BUILTIN_ATTRIBUTES` is almost entirely unchanged from the original, to
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//! ease updating.
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use once_cell::sync::OnceCell;
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use rustc_hash::FxHashMap;
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/// Ignored attribute namespaces used by tools.
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pub const TOOL_MODULES: &[&str] = &["rustfmt", "clippy"];
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pub struct BuiltinAttribute {
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pub name: &'static str,
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pub template: AttributeTemplate,
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}
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/// A template that the attribute input must match.
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/// Only top-level shape (`#[attr]` vs `#[attr(...)]` vs `#[attr = ...]`) is considered now.
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#[derive(Clone, Copy)]
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pub struct AttributeTemplate {
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pub word: bool,
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pub list: Option<&'static str>,
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pub name_value_str: Option<&'static str>,
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}
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pub fn find_builtin_attr_idx(name: &str) -> Option<usize> {
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static BUILTIN_LOOKUP_TABLE: OnceCell<FxHashMap<&'static str, usize>> = OnceCell::new();
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BUILTIN_LOOKUP_TABLE
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.get_or_init(|| {
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INERT_ATTRIBUTES.iter().map(|attr| attr.name).enumerate().map(|(a, b)| (b, a)).collect()
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})
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.get(name)
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.copied()
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}
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// impl AttributeTemplate {
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// const DEFAULT: AttributeTemplate =
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// AttributeTemplate { word: false, list: None, name_value_str: None };
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// }
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/// A convenience macro for constructing attribute templates.
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/// E.g., `template!(Word, List: "description")` means that the attribute
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/// supports forms `#[attr]` and `#[attr(description)]`.
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macro_rules! template {
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(Word) => { template!(@ true, None, None) };
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(List: $descr: expr) => { template!(@ false, Some($descr), None) };
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(NameValueStr: $descr: expr) => { template!(@ false, None, Some($descr)) };
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(Word, List: $descr: expr) => { template!(@ true, Some($descr), None) };
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(Word, NameValueStr: $descr: expr) => { template!(@ true, None, Some($descr)) };
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(List: $descr1: expr, NameValueStr: $descr2: expr) => {
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template!(@ false, Some($descr1), Some($descr2))
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};
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(Word, List: $descr1: expr, NameValueStr: $descr2: expr) => {
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template!(@ true, Some($descr1), Some($descr2))
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};
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(@ $word: expr, $list: expr, $name_value_str: expr) => {
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AttributeTemplate {
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word: $word, list: $list, name_value_str: $name_value_str
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}
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};
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}
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macro_rules! ungated {
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($attr:ident, $typ:expr, $tpl:expr, $duplicates:expr $(, @only_local: $only_local:expr)? $(,)?) => {
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BuiltinAttribute { name: stringify!($attr), template: $tpl }
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};
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}
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macro_rules! gated {
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($attr:ident, $typ:expr, $tpl:expr, $duplicates:expr $(, @only_local: $only_local:expr)?, $gate:ident, $msg:expr $(,)?) => {
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BuiltinAttribute { name: stringify!($attr), template: $tpl }
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};
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($attr:ident, $typ:expr, $tpl:expr, $duplicates:expr $(, @only_local: $only_local:expr)?, $msg:expr $(,)?) => {
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BuiltinAttribute { name: stringify!($attr), template: $tpl }
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};
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}
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macro_rules! rustc_attr {
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(TEST, $attr:ident, $typ:expr, $tpl:expr, $duplicate:expr $(, @only_local: $only_local:expr)? $(,)?) => {
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rustc_attr!(
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$attr,
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$typ,
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$tpl,
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$duplicate,
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$(@only_local: $only_local,)?
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concat!(
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"the `#[",
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stringify!($attr),
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"]` attribute is just used for rustc unit tests \
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and will never be stable",
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),
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)
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};
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($attr:ident, $typ:expr, $tpl:expr, $duplicates:expr $(, @only_local: $only_local:expr)?, $msg:expr $(,)?) => {
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BuiltinAttribute { name: stringify!($attr), template: $tpl }
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};
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}
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#[allow(unused_macros)]
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macro_rules! experimental {
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($attr:ident) => {
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concat!("the `#[", stringify!($attr), "]` attribute is an experimental feature")
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};
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}
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/// "Inert" built-in attributes that have a special meaning to rustc or rustdoc.
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#[rustfmt::skip]
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pub const INERT_ATTRIBUTES: &[BuiltinAttribute] = &[
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// ==========================================================================
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// Stable attributes:
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// ==========================================================================
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// Conditional compilation:
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ungated!(cfg, Normal, template!(List: "predicate"), DuplicatesOk),
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ungated!(cfg_attr, Normal, template!(List: "predicate, attr1, attr2, ..."), DuplicatesOk),
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// Testing:
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ungated!(ignore, Normal, template!(Word, NameValueStr: "reason"), WarnFollowing),
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ungated!(
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should_panic, Normal,
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template!(Word, List: r#"expected = "reason"#, NameValueStr: "reason"), FutureWarnFollowing,
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),
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// FIXME(Centril): This can be used on stable but shouldn't.
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ungated!(reexport_test_harness_main, CrateLevel, template!(NameValueStr: "name"), ErrorFollowing),
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// Macros:
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ungated!(automatically_derived, Normal, template!(Word), WarnFollowing),
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ungated!(macro_use, Normal, template!(Word, List: "name1, name2, ..."), WarnFollowingWordOnly),
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ungated!(macro_escape, Normal, template!(Word), WarnFollowing), // Deprecated synonym for `macro_use`.
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ungated!(macro_export, Normal, template!(Word, List: "local_inner_macros"), WarnFollowing),
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ungated!(proc_macro, Normal, template!(Word), ErrorFollowing),
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ungated!(
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proc_macro_derive, Normal,
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template!(List: "TraitName, /*opt*/ attributes(name1, name2, ...)"), ErrorFollowing,
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),
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ungated!(proc_macro_attribute, Normal, template!(Word), ErrorFollowing),
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// Lints:
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ungated!(
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warn, Normal, template!(List: r#"lint1, lint2, ..., /*opt*/ reason = "...""#), DuplicatesOk
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),
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ungated!(
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allow, Normal, template!(List: r#"lint1, lint2, ..., /*opt*/ reason = "...""#), DuplicatesOk
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),
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gated!(
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expect, Normal, template!(List: r#"lint1, lint2, ..., /*opt*/ reason = "...""#), DuplicatesOk,
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lint_reasons, experimental!(expect)
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),
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ungated!(
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forbid, Normal, template!(List: r#"lint1, lint2, ..., /*opt*/ reason = "...""#), DuplicatesOk
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),
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ungated!(
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deny, Normal, template!(List: r#"lint1, lint2, ..., /*opt*/ reason = "...""#), DuplicatesOk
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),
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ungated!(must_use, Normal, template!(Word, NameValueStr: "reason"), FutureWarnFollowing),
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gated!(
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must_not_suspend, Normal, template!(Word, NameValueStr: "reason"), WarnFollowing,
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experimental!(must_not_suspend)
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),
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ungated!(
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deprecated, Normal,
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template!(
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Word,
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List: r#"/*opt*/ since = "version", /*opt*/ note = "reason""#,
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NameValueStr: "reason"
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),
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ErrorFollowing
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),
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// Crate properties:
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ungated!(crate_name, CrateLevel, template!(NameValueStr: "name"), FutureWarnFollowing),
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ungated!(crate_type, CrateLevel, template!(NameValueStr: "bin|lib|..."), DuplicatesOk),
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// crate_id is deprecated
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ungated!(crate_id, CrateLevel, template!(NameValueStr: "ignored"), FutureWarnFollowing),
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// ABI, linking, symbols, and FFI
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ungated!(
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link, Normal,
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template!(List: r#"name = "...", /*opt*/ kind = "dylib|static|...", /*opt*/ wasm_import_module = "...""#),
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DuplicatesOk,
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),
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ungated!(link_name, Normal, template!(NameValueStr: "name"), FutureWarnPreceding),
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ungated!(no_link, Normal, template!(Word), WarnFollowing),
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ungated!(repr, Normal, template!(List: "C"), DuplicatesOk),
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ungated!(export_name, Normal, template!(NameValueStr: "name"), FutureWarnPreceding),
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ungated!(link_section, Normal, template!(NameValueStr: "name"), FutureWarnPreceding),
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ungated!(no_mangle, Normal, template!(Word), WarnFollowing, @only_local: true),
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ungated!(used, Normal, template!(Word, List: "compiler|linker"), WarnFollowing, @only_local: true),
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// Limits:
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ungated!(recursion_limit, CrateLevel, template!(NameValueStr: "N"), FutureWarnFollowing),
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ungated!(type_length_limit, CrateLevel, template!(NameValueStr: "N"), FutureWarnFollowing),
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gated!(
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const_eval_limit, CrateLevel, template!(NameValueStr: "N"), ErrorFollowing,
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const_eval_limit, experimental!(const_eval_limit)
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),
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gated!(
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move_size_limit, CrateLevel, template!(NameValueStr: "N"), ErrorFollowing,
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large_assignments, experimental!(move_size_limit)
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),
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// Entry point:
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ungated!(start, Normal, template!(Word), WarnFollowing),
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ungated!(no_start, CrateLevel, template!(Word), WarnFollowing),
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ungated!(no_main, CrateLevel, template!(Word), WarnFollowing),
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// Modules, prelude, and resolution:
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ungated!(path, Normal, template!(NameValueStr: "file"), FutureWarnFollowing),
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ungated!(no_std, CrateLevel, template!(Word), WarnFollowing),
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ungated!(no_implicit_prelude, Normal, template!(Word), WarnFollowing),
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ungated!(non_exhaustive, Normal, template!(Word), WarnFollowing),
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// Runtime
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ungated!(
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windows_subsystem, CrateLevel,
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template!(NameValueStr: "windows|console"), FutureWarnFollowing
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),
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ungated!(panic_handler, Normal, template!(Word), WarnFollowing), // RFC 2070
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// Code generation:
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ungated!(inline, Normal, template!(Word, List: "always|never"), FutureWarnFollowing, @only_local: true),
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ungated!(cold, Normal, template!(Word), WarnFollowing, @only_local: true),
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ungated!(no_builtins, CrateLevel, template!(Word), WarnFollowing),
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ungated!(target_feature, Normal, template!(List: r#"enable = "name""#), DuplicatesOk),
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ungated!(track_caller, Normal, template!(Word), WarnFollowing),
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gated!(
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no_sanitize, Normal,
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template!(List: "address, memory, thread"), DuplicatesOk,
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experimental!(no_sanitize)
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),
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gated!(no_coverage, Normal, template!(Word), WarnFollowing, experimental!(no_coverage)),
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ungated!(
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doc, Normal, template!(List: "hidden|inline|...", NameValueStr: "string"), DuplicatesOk
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),
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// ==========================================================================
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// Unstable attributes:
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// ==========================================================================
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// RFC #3191: #[debugger_visualizer] support
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gated!(
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debugger_visualizer, Normal, template!(List: r#"natvis_file = "...", gdb_script_file = "...""#),
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DuplicatesOk, experimental!(debugger_visualizer)
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),
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// Linking:
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gated!(naked, Normal, template!(Word), WarnFollowing, @only_local: true, naked_functions, experimental!(naked)),
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gated!(
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link_ordinal, Normal, template!(List: "ordinal"), ErrorPreceding, raw_dylib,
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experimental!(link_ordinal)
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),
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// Plugins:
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// XXX Modified for use in rust-analyzer
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// BuiltinAttribute {
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// name: sym::plugin,
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// only_local: false,
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// type_: CrateLevel,
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// template: template!(List: "name"),
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// duplicates: DuplicatesOk,
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// gate: Gated(
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// Stability::Deprecated(
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// "https://github.com/rust-lang/rust/pull/64675",
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// Some("may be removed in a future compiler version"),
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// ),
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// sym::plugin,
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// "compiler plugins are deprecated",
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// cfg_fn!(plugin)
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// ),
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// },
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BuiltinAttribute {
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name: "plugin",
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template: template!(List: "name"),
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},
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// Testing:
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gated!(
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test_runner, CrateLevel, template!(List: "path"), ErrorFollowing, custom_test_frameworks,
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"custom test frameworks are an unstable feature",
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),
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// RFC #1268
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gated!(
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marker, Normal, template!(Word), WarnFollowing, marker_trait_attr, experimental!(marker)
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),
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gated!(
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thread_local, Normal, template!(Word), WarnFollowing,
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"`#[thread_local]` is an experimental feature, and does not currently handle destructors",
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),
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gated!(no_core, CrateLevel, template!(Word), WarnFollowing, experimental!(no_core)),
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// RFC 2412
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gated!(
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optimize, Normal, template!(List: "size|speed"), ErrorPreceding, optimize_attribute,
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experimental!(optimize),
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),
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// RFC 2867
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gated!(
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instruction_set, Normal, template!(List: "set"), ErrorPreceding,
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isa_attribute, experimental!(instruction_set)
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),
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gated!(
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ffi_returns_twice, Normal, template!(Word), WarnFollowing, experimental!(ffi_returns_twice)
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),
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gated!(ffi_pure, Normal, template!(Word), WarnFollowing, experimental!(ffi_pure)),
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gated!(ffi_const, Normal, template!(Word), WarnFollowing, experimental!(ffi_const)),
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gated!(
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register_attr, CrateLevel, template!(List: "attr1, attr2, ..."), DuplicatesOk,
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experimental!(register_attr),
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),
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gated!(
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register_tool, CrateLevel, template!(List: "tool1, tool2, ..."), DuplicatesOk,
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experimental!(register_tool),
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),
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gated!(
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cmse_nonsecure_entry, Normal, template!(Word), WarnFollowing,
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experimental!(cmse_nonsecure_entry)
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),
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// RFC 2632
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gated!(
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const_trait, Normal, template!(Word), WarnFollowing, const_trait_impl,
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"`const` is a temporary placeholder for marking a trait that is suitable for `const` \
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`impls` and all default bodies as `const`, which may be removed or renamed in the \
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future."
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),
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// lang-team MCP 147
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gated!(
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deprecated_safe, Normal, template!(List: r#"since = "version", note = "...""#), ErrorFollowing,
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experimental!(deprecated_safe),
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),
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// ==========================================================================
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// Internal attributes: Stability, deprecation, and unsafe:
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// ==========================================================================
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ungated!(feature, CrateLevel, template!(List: "name1, name2, ..."), DuplicatesOk),
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// DuplicatesOk since it has its own validation
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ungated!(
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stable, Normal, template!(List: r#"feature = "name", since = "version""#), DuplicatesOk,
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),
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ungated!(
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unstable, Normal,
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template!(List: r#"feature = "name", reason = "...", issue = "N""#), DuplicatesOk,
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),
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ungated!(rustc_const_unstable, Normal, template!(List: r#"feature = "name""#), DuplicatesOk),
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ungated!(rustc_const_stable, Normal, template!(List: r#"feature = "name""#), DuplicatesOk),
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gated!(
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allow_internal_unstable, Normal, template!(Word, List: "feat1, feat2, ..."), DuplicatesOk,
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"allow_internal_unstable side-steps feature gating and stability checks",
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),
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gated!(
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rustc_allow_const_fn_unstable, Normal,
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template!(Word, List: "feat1, feat2, ..."), DuplicatesOk,
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"rustc_allow_const_fn_unstable side-steps feature gating and stability checks"
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),
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gated!(
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allow_internal_unsafe, Normal, template!(Word), WarnFollowing,
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"allow_internal_unsafe side-steps the unsafe_code lint",
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),
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// ==========================================================================
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// Internal attributes: Type system related:
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// ==========================================================================
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gated!(fundamental, Normal, template!(Word), WarnFollowing, experimental!(fundamental)),
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gated!(
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may_dangle, Normal, template!(Word), WarnFollowing, dropck_eyepatch,
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"`may_dangle` has unstable semantics and may be removed in the future",
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),
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// ==========================================================================
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// Internal attributes: Runtime related:
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// ==========================================================================
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rustc_attr!(rustc_allocator, Normal, template!(Word), WarnFollowing, IMPL_DETAIL),
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rustc_attr!(rustc_allocator_nounwind, Normal, template!(Word), WarnFollowing, IMPL_DETAIL),
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gated!(
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alloc_error_handler, Normal, template!(Word), WarnFollowing,
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experimental!(alloc_error_handler)
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),
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gated!(
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default_lib_allocator, Normal, template!(Word), WarnFollowing, allocator_internals,
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experimental!(default_lib_allocator),
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),
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gated!(
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needs_allocator, Normal, template!(Word), WarnFollowing, allocator_internals,
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experimental!(needs_allocator),
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),
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gated!(panic_runtime, Normal, template!(Word), WarnFollowing, experimental!(panic_runtime)),
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gated!(
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needs_panic_runtime, Normal, template!(Word), WarnFollowing,
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experimental!(needs_panic_runtime)
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),
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gated!(
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compiler_builtins, Normal, template!(Word), WarnFollowing,
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"the `#[compiler_builtins]` attribute is used to identify the `compiler_builtins` crate \
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which contains compiler-rt intrinsics and will never be stable",
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),
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gated!(
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profiler_runtime, Normal, template!(Word), WarnFollowing,
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"the `#[profiler_runtime]` attribute is used to identify the `profiler_builtins` crate \
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which contains the profiler runtime and will never be stable",
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),
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// ==========================================================================
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// Internal attributes, Linkage:
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// ==========================================================================
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gated!(
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linkage, Normal, template!(NameValueStr: "external|internal|..."), ErrorPreceding, @only_local: true,
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"the `linkage` attribute is experimental and not portable across platforms",
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),
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rustc_attr!(
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rustc_std_internal_symbol, Normal, template!(Word), WarnFollowing, @only_local: true, INTERNAL_UNSTABLE
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),
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// ==========================================================================
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// Internal attributes, Macro related:
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// ==========================================================================
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rustc_attr!(
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rustc_builtin_macro, Normal,
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template!(Word, List: "name, /*opt*/ attributes(name1, name2, ...)"), ErrorFollowing,
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IMPL_DETAIL,
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),
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rustc_attr!(rustc_proc_macro_decls, Normal, template!(Word), WarnFollowing, INTERNAL_UNSTABLE),
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rustc_attr!(
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rustc_macro_transparency, Normal,
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template!(NameValueStr: "transparent|semitransparent|opaque"), ErrorFollowing,
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"used internally for testing macro hygiene",
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),
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// ==========================================================================
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// Internal attributes, Diagnostics related:
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// ==========================================================================
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rustc_attr!(
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rustc_on_unimplemented, Normal,
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template!(
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List: r#"/*opt*/ message = "...", /*opt*/ label = "...", /*opt*/ note = "...""#,
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NameValueStr: "message"
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),
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ErrorFollowing,
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INTERNAL_UNSTABLE
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),
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// Enumerates "identity-like" conversion methods to suggest on type mismatch.
|
|
rustc_attr!(
|
|
rustc_conversion_suggestion, Normal, template!(Word), WarnFollowing, INTERNAL_UNSTABLE
|
|
),
|
|
// Prevents field reads in the marked trait or method to be considered
|
|
// during dead code analysis.
|
|
rustc_attr!(
|
|
rustc_trivial_field_reads, Normal, template!(Word), WarnFollowing, INTERNAL_UNSTABLE
|
|
),
|
|
// Used by the `rustc::potential_query_instability` lint to warn methods which
|
|
// might not be stable during incremental compilation.
|
|
rustc_attr!(rustc_lint_query_instability, Normal, template!(Word), WarnFollowing, INTERNAL_UNSTABLE),
|
|
// Used by the `rustc::untranslatable_diagnostic` and `rustc::diagnostic_outside_of_impl` lints
|
|
// to assist in changes to diagnostic APIs.
|
|
rustc_attr!(rustc_lint_diagnostics, Normal, template!(Word), WarnFollowing, INTERNAL_UNSTABLE),
|
|
|
|
// ==========================================================================
|
|
// Internal attributes, Const related:
|
|
// ==========================================================================
|
|
|
|
rustc_attr!(rustc_promotable, Normal, template!(Word), WarnFollowing, IMPL_DETAIL),
|
|
rustc_attr!(
|
|
rustc_legacy_const_generics, Normal, template!(List: "N"), ErrorFollowing,
|
|
INTERNAL_UNSTABLE
|
|
),
|
|
// Do not const-check this function's body. It will always get replaced during CTFE.
|
|
rustc_attr!(
|
|
rustc_do_not_const_check, Normal, template!(Word), WarnFollowing, INTERNAL_UNSTABLE
|
|
),
|
|
|
|
// ==========================================================================
|
|
// Internal attributes, Layout related:
|
|
// ==========================================================================
|
|
|
|
rustc_attr!(
|
|
rustc_layout_scalar_valid_range_start, Normal, template!(List: "value"), ErrorFollowing,
|
|
"the `#[rustc_layout_scalar_valid_range_start]` attribute is just used to enable \
|
|
niche optimizations in libcore and libstd and will never be stable",
|
|
),
|
|
rustc_attr!(
|
|
rustc_layout_scalar_valid_range_end, Normal, template!(List: "value"), ErrorFollowing,
|
|
"the `#[rustc_layout_scalar_valid_range_end]` attribute is just used to enable \
|
|
niche optimizations in libcore and libstd and will never be stable",
|
|
),
|
|
rustc_attr!(
|
|
rustc_nonnull_optimization_guaranteed, Normal, template!(Word), WarnFollowing,
|
|
"the `#[rustc_nonnull_optimization_guaranteed]` attribute is just used to enable \
|
|
niche optimizations in libcore and libstd and will never be stable",
|
|
),
|
|
|
|
// ==========================================================================
|
|
// Internal attributes, Misc:
|
|
// ==========================================================================
|
|
gated!(
|
|
lang, Normal, template!(NameValueStr: "name"), DuplicatesOk, @only_local: true, lang_items,
|
|
"language items are subject to change",
|
|
),
|
|
rustc_attr!(
|
|
rustc_pass_by_value, Normal,
|
|
template!(Word), ErrorFollowing,
|
|
"#[rustc_pass_by_value] is used to mark types that must be passed by value instead of reference."
|
|
),
|
|
rustc_attr!(
|
|
rustc_coherence_is_core, AttributeType::CrateLevel, template!(Word), ErrorFollowing, @only_local: true,
|
|
"#![rustc_coherence_is_core] allows inherent methods on builtin types, only intended to be used in `core`."
|
|
),
|
|
rustc_attr!(
|
|
rustc_allow_incoherent_impl, AttributeType::Normal, template!(Word), ErrorFollowing, @only_local: true,
|
|
"#[rustc_allow_incoherent_impl] has to be added to all impl items of an incoherent inherent impl."
|
|
),
|
|
rustc_attr!(
|
|
rustc_has_incoherent_inherent_impls, AttributeType::Normal, template!(Word), ErrorFollowing,
|
|
"#[rustc_has_incoherent_inherent_impls] allows the addition of incoherent inherent impls for \
|
|
the given type by annotating all impl items with #[rustc_allow_incoherent_impl]."
|
|
),
|
|
rustc_attr!(
|
|
rustc_box, AttributeType::Normal, template!(Word), ErrorFollowing,
|
|
"#[rustc_box] allows creating boxes \
|
|
and it is only intended to be used in `alloc`."
|
|
),
|
|
|
|
// modified for r-a
|
|
// BuiltinAttribute {
|
|
// name: sym::rustc_diagnostic_item,
|
|
// // FIXME: This can be `true` once we always use `tcx.is_diagnostic_item`.
|
|
// only_local: false,
|
|
// type_: Normal,
|
|
// template: template!(NameValueStr: "name"),
|
|
// duplicates: ErrorFollowing,
|
|
// gate: Gated(
|
|
// Stability::Unstable,
|
|
// sym::rustc_attrs,
|
|
// "diagnostic items compiler internal support for linting",
|
|
// cfg_fn!(rustc_attrs),
|
|
// ),
|
|
// },
|
|
BuiltinAttribute {
|
|
name: "rustc_diagnostic_item",
|
|
template: template!(NameValueStr: "name"),
|
|
},
|
|
gated!(
|
|
// Used in resolve:
|
|
prelude_import, Normal, template!(Word), WarnFollowing,
|
|
"`#[prelude_import]` is for use by rustc only",
|
|
),
|
|
gated!(
|
|
rustc_paren_sugar, Normal, template!(Word), WarnFollowing, unboxed_closures,
|
|
"unboxed_closures are still evolving",
|
|
),
|
|
rustc_attr!(
|
|
rustc_inherit_overflow_checks, Normal, template!(Word), WarnFollowing, @only_local: true,
|
|
"the `#[rustc_inherit_overflow_checks]` attribute is just used to control \
|
|
overflow checking behavior of several libcore functions that are inlined \
|
|
across crates and will never be stable",
|
|
),
|
|
rustc_attr!(
|
|
rustc_reservation_impl, Normal,
|
|
template!(NameValueStr: "reservation message"), ErrorFollowing,
|
|
"the `#[rustc_reservation_impl]` attribute is internally used \
|
|
for reserving for `for<T> From<!> for T` impl"
|
|
),
|
|
rustc_attr!(
|
|
rustc_test_marker, Normal, template!(Word), WarnFollowing,
|
|
"the `#[rustc_test_marker]` attribute is used internally to track tests",
|
|
),
|
|
rustc_attr!(
|
|
rustc_unsafe_specialization_marker, Normal, template!(Word), WarnFollowing,
|
|
"the `#[rustc_unsafe_specialization_marker]` attribute is used to check specializations"
|
|
),
|
|
rustc_attr!(
|
|
rustc_specialization_trait, Normal, template!(Word), WarnFollowing,
|
|
"the `#[rustc_specialization_trait]` attribute is used to check specializations"
|
|
),
|
|
rustc_attr!(
|
|
rustc_main, Normal, template!(Word), WarnFollowing,
|
|
"the `#[rustc_main]` attribute is used internally to specify test entry point function",
|
|
),
|
|
rustc_attr!(
|
|
rustc_skip_array_during_method_dispatch, Normal, template!(Word), WarnFollowing,
|
|
"the `#[rustc_skip_array_during_method_dispatch]` attribute is used to exclude a trait \
|
|
from method dispatch when the receiver is an array, for compatibility in editions < 2021."
|
|
),
|
|
rustc_attr!(
|
|
rustc_must_implement_one_of, Normal, template!(List: "function1, function2, ..."), ErrorFollowing,
|
|
"the `#[rustc_must_implement_one_of]` attribute is used to change minimal complete \
|
|
definition of a trait, it's currently in experimental form and should be changed before \
|
|
being exposed outside of the std"
|
|
),
|
|
|
|
// ==========================================================================
|
|
// Internal attributes, Testing:
|
|
// ==========================================================================
|
|
|
|
rustc_attr!(TEST, rustc_outlives, Normal, template!(Word), WarnFollowing),
|
|
rustc_attr!(TEST, rustc_capture_analysis, Normal, template!(Word), WarnFollowing),
|
|
rustc_attr!(TEST, rustc_insignificant_dtor, Normal, template!(Word), WarnFollowing),
|
|
rustc_attr!(TEST, rustc_strict_coherence, Normal, template!(Word), WarnFollowing),
|
|
rustc_attr!(TEST, rustc_variance, Normal, template!(Word), WarnFollowing),
|
|
rustc_attr!(TEST, rustc_layout, Normal, template!(List: "field1, field2, ..."), WarnFollowing),
|
|
rustc_attr!(TEST, rustc_regions, Normal, template!(Word), WarnFollowing),
|
|
rustc_attr!(
|
|
TEST, rustc_error, Normal,
|
|
template!(Word, List: "delay_span_bug_from_inside_query"), WarnFollowingWordOnly
|
|
),
|
|
rustc_attr!(TEST, rustc_dump_user_substs, Normal, template!(Word), WarnFollowing),
|
|
rustc_attr!(TEST, rustc_evaluate_where_clauses, Normal, template!(Word), WarnFollowing),
|
|
rustc_attr!(
|
|
TEST, rustc_if_this_changed, Normal, template!(Word, List: "DepNode"), DuplicatesOk
|
|
),
|
|
rustc_attr!(
|
|
TEST, rustc_then_this_would_need, Normal, template!(List: "DepNode"), DuplicatesOk
|
|
),
|
|
rustc_attr!(
|
|
TEST, rustc_clean, Normal,
|
|
template!(List: r#"cfg = "...", /*opt*/ label = "...", /*opt*/ except = "...""#),
|
|
DuplicatesOk,
|
|
),
|
|
rustc_attr!(
|
|
TEST, rustc_partition_reused, Normal,
|
|
template!(List: r#"cfg = "...", module = "...""#), DuplicatesOk,
|
|
),
|
|
rustc_attr!(
|
|
TEST, rustc_partition_codegened, Normal,
|
|
template!(List: r#"cfg = "...", module = "...""#), DuplicatesOk,
|
|
),
|
|
rustc_attr!(
|
|
TEST, rustc_expected_cgu_reuse, Normal,
|
|
template!(List: r#"cfg = "...", module = "...", kind = "...""#), DuplicatesOk,
|
|
),
|
|
rustc_attr!(TEST, rustc_symbol_name, Normal, template!(Word), WarnFollowing),
|
|
rustc_attr!(TEST, rustc_polymorphize_error, Normal, template!(Word), WarnFollowing),
|
|
rustc_attr!(TEST, rustc_def_path, Normal, template!(Word), WarnFollowing),
|
|
rustc_attr!(TEST, rustc_mir, Normal, template!(List: "arg1, arg2, ..."), DuplicatesOk),
|
|
rustc_attr!(TEST, rustc_dump_program_clauses, Normal, template!(Word), WarnFollowing),
|
|
rustc_attr!(TEST, rustc_dump_env_program_clauses, Normal, template!(Word), WarnFollowing),
|
|
rustc_attr!(TEST, rustc_object_lifetime_default, Normal, template!(Word), WarnFollowing),
|
|
rustc_attr!(TEST, rustc_dump_vtable, Normal, template!(Word), WarnFollowing),
|
|
rustc_attr!(TEST, rustc_dummy, Normal, template!(Word /* doesn't matter*/), DuplicatesOk),
|
|
gated!(
|
|
omit_gdb_pretty_printer_section, Normal, template!(Word), WarnFollowing,
|
|
"the `#[omit_gdb_pretty_printer_section]` attribute is just used for the Rust test suite",
|
|
),
|
|
];
|